https://html.spec.whatwg.org/#set-the-ongoing-navigation needs a null-check

[mbrodesser-Igalia]

What is the issue with the HTML Standard?

... should "inform the navigation API about aborting navigation" only if "navigable's ongoing navigation" is not null.

It's set to null e.g. in step 2 of https://html.spec.whatwg.org/#navigate-to-a-javascript:-url.

[domenic]

Why do you think this? If we reach step 2 of https://html.spec.whatwg.org/#navigate-to-a-javascript:-url, we are aborting the ongoing navigation, and so we should inform the navigation API about it.